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Two identical balls A and B having veloc...

Two identical balls A and B having velocities of `0.5M//s` and `-0.3m//s` respectively collide elasticity in one dimension. The velocities of B and A after the collision respectively will be:

A

`-0.3 m//s and 0.5 m//s`

B

`0.3 m//s and 0.5 m//s`

C

`-0.5 m//s and 0.3 m//s`

D

`0.5 m//s and -0.3 m//s`

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